to be honest, its a sketch over the screen shot of the 3D CAD file for presentation purpose
my colleague did the sketch over while I did the CAD, its team work! On a project with this complexity, no one does it alone.

to be honest, its a sketch over the screen shot of the 3D CAD file for presentation purpose
my colleague did the sketch over while I did the CAD, its team work! On a project with this complexity, no one does it alone.